BIOLOGY HIGH SCHOOL

Why do sharks swim while they sleep

Answers

Answer 1
Answer: Because if they ever stop moving they die
Answer 2
Answer:

Answer:

if they stop moving they will DIE

Explanation:

Related Questions

A relationship between two species that benefits both species would be described as what type of relationshipmutualism communication commensalism parasitism
Please answer all the three questions​
Many types of scientific equipment are used to perform different functions in the science lab. Which of the following combinations of equipment would be needed to bring one liter of water to 85°C?
Tina has a sunburn. A week later, the skin on her burnt shoulder peels away. The cells are undergoing what process? a) Mitosis b) Apoptosis c) Meiosis d) Differentiation
A student conducted an experiment to test the effect of the digestive enzyme pepsin on cooked egg white and potato in the presence of hydrochloric acid at a pH of 1. Which could be a probable inference?Pepsin digests egg white because it mainly contains protein. Pepsin digests potato because it mainly contains starch. Pepsin digests egg white because it mainly contains fat.

1. in an ecosystem with four levels—producers, primary consumers, and two higher-level consumers—describe where the decomposers operate relative to the other trophic levels. provide at least two examples of organisms at each level.

Answers

Decomposers, as the name suggests, decompose dead plants or animals into simple compounds. They feed on dead producers from the first levels or consumers from other three levels. Breaking them down, decomposers release nutrients that producers can use.
In an ecosystem with four levels, the first level are producers, such as plants and algae. On the second trophic level, there are primary consumers, herbivores that eat plants, for example, a deer, a rabbit, a grasshopper. The next trophic level belongs to secondary consumers that eat herbivores, for example, a wolf, a fox. The highest level is tertiary consumers that eat carnivores, for example, a bear, an eagle.

A plant's photoperiod is the amount of time each day that the plant receives sunlight. A plant with a 12L:12D photoperiod receives 12 hours of light and 12 hours of dark per day. A researcher investigated whether photoperiod affects the development of flower buds in chrysanthemums, a type of flowering plant. She maintained three samples of chrysanthemums that did not initially have any flower buds under different photoperiods. After two weeks, the researcher recorded the presence or absence of flower buds in each sample. The researcher's results are shown in the table. Sample Photoperiod Results 1 13L:11D fully developed flower buds formed on all plants 2 14L:10D partly developed flower buds formed on some plants 3 15L:9D no buds formed on any plant Which statement is best supported by the researcher's findings?

Answers

Answer:

13L:11D

Explanation:

Based on the photoperiod there are two types of plants -  

a) Short day plant  

b) Long day plant

Here the term short and long day do not mean that the provided length of day are the critical length of day required for reproduction. But opposite to that it means that the length of the day required for reproduction must be  

a) Shorter than the defined length of day for short day plant  

b) And longer than the defined length of day for long day plant  

Chrysanthemums  is a short day plant and thus option 1 with 13L:11D will produce fully developed flower buds

Option A is correct 13L:11D

Final answer:

The researcher's findings illustrate that photoperiod greatly affects the development of chrysanthemum buds, with longer periods of light exposure reducing bud formation. The mechanism behind this is likely due to photoperiodism, a biological response that allows plants to regulate their growth based on day length.

Explanation:

The researcher's findings suggest that the photoperiod, or duration of light exposure, significantly impacts the development of flower buds in chrysanthemums. In the experiment, chrysanthemums with a 13L:11D photoperiod produced fully developed flower buds. In contrast, the plants with a 14L:10D photoperiod produced only partly developed buds and those with a 15L:9D photoperiod did not develop any buds. It is evident from these results that there is a decrease in bud formation with an increase in light hours. Chrysanthemums, therefore, seem to need a specific balance of light and darkness for optimal flower bud development.

The mechanism behind this is likely related to photoperiodism, a biological response to the timing and duration of day and night that controls flowering and other growth in plants. Plants use the phytochrome system to sense changes in day length, which is an essential indicator of season. This system allows them to regulate their physiological activities, such as flowering, accordingly. So, the results of this study underline the importance of photoperiodism in flowering plants.

Learn more about Photoperiodism here:

brainly.com/question/33473998

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Why is tissue typing necessary before a kidney transplant?A. to determine the compatibility of the blood types of donor and recipient
B. to determine the compatibility of the organs of donor and recipient
C. to determine the compatibility of antibodies of donor and recipient
D. to determine the compatibility of the blood vessels of donor and recipient

Answers

the answer is A. to determine the compatibility of the blood types of donor and recipient

Place the mouse, fruit fly, duck, and gorilla in order of their relatedness to humans, from least related to mostrelated.
a. mouse - fruit fly - duck - gorilla
b. fruit fly - mouse - duck - gorilla
c. gorilla - mouse - duck - fruit fly
d. fruit fly - duck - mouse - gorilla

Answers

The answer is C.  Gorillas are more closely related because they are apart of the Great Ape family which includes Gorillas, Chimpanzees, Humans, and Orangotangs
C is the answer gorillanclosest to us fruit fly isn't even mammal

Gregory is studying Lake Mairead. The lake has clear water and supports a healthy community of algae, fishes, and other aquatic organisms Gregory hypothesizes that phosphorus is a limiting nutrient in the lake. Which experimental result provides me strongest evidence in support of the hypothesis?

Answers

Answer:b

Explanation:

Imagine you are in a laboratory. You are exploring the following reaction: A + B → C When the product C is created, bubbles form. When 10mL of A is added to 10mL of B, the reaction takes twenty seconds. Your teacher gives you three unknown substances (X, Y, and Z), one of which is a catalyst for the reaction. Design an experiment to test substances X, Y, and Z to determine which one is a catalyst for the reaction.

Answers

Ok so in this experiment what we want to find is the catalyst for the reaction. Our original reaction is the following. A + B --> C, therefore to find which of the unknown substances (X, Y, and Z) is the catalyst reaction we simply have to do the following:


A + B + X --> C

A + B + Y --> C

A + B + Z --> C


The reaction that produces C much faster than our original reaction A + B --> C will be our catalyst. The reason being that one of the substances will increase the rate of the chemical reaction.


I hope it helps, Regards.

Prepare three test tubes containing reactant A.  Prepare three test tubes containing reactant B.  Add one test tube of reactant B and one unknown to one test tube of reactant A. Repeat for the other two unknowns. Time the reaction until bubbling stops. The unknown that causes the reaction to occur the quickest is the catalyst.
Other Questions
Segmentation is the subdivision of the body into segments. True segmentation is found in which of the following phyla? A. Arthropoda, Annelida, Chordata. B. Echinodermata, Platyhelminthes, Cnidaria. C. Mollusca, Chordata, Annelida. D. Annelida, Mollusca, Arthropoda. E. Arthropoda, Chordata, Porifera.
As a result of wildfires, _______ in grasslands.a. tree growth increases b. grass growth increases c. soil quality decreases d. invertebrate variety decreases
Order the steps from arrival of transcription-promoting factors at the eukaryotic DNA gene promoter to synthesis of an mRNA copy of the gene. Include the terms RNA polymerase II, elongation, promoter, TATA box, nucleotides, and transcription factor.
the three toed sloth often is camouflaged by algae which type of symbiosis does this represent and why